Our grand finale/blowout/party for Philly Tech Week will take place on Saturday, April 27. Everything from the previous week’s events will be on interactive display, and more. It’s an all-day exhibition of everything that goes on at Hive76 and everybody’s invited!
For Philly Tech Week, I will be showing visitors how to take a shape from Adobe Illustrator into the popular open source CAD program OpenSCAD and make a 3D model suitable for 3D printing.
Draw in Illustrator, extruded in OpenSCAD
I’m sure you know Illustrator. It’s the most successful vector drawing program <clarkson>in the world.</clarkson> OpenSCAD is less well known. It is best described as coding for objects. You make a solid with the function cube() and cut a cylinder() out of it with the difference() function, etc. But sometimes you want a more organic or complicated shape to start with. That’s where artist JK Keller stepped in and made a script that automates some of the process for you. What you need for this workshop:
On Tuesday April 23, Hive76 will be hosting Fighting Robot Night as part of our week-long celebration of Philly Tech Week. We will have four miniature remote-controlled robots designed to battle one another in a table-top arena. All are welcome and all are invited!
Show up Tuesday and sign up for a spot to drive and fight, or just hang out and watch the destruction. Ask questions, check out our space and get your robot rocks off. This will also be a preview of an upcoming fighting robot class to be offered at Hive in which participants will build machines similar to those featured at Fighting Robot Night (TBA, check back soon!).
Hey everyone, as you may know, Philly Tech Week is coming up in late April. Hive76, as always likes to make ourselves as available possible during the week, and offer as much as we can. We’ll be open from 5pm-10pm Mon-Thur, and Noon-10pm on Saturday while showing off one unique and interesting aspect of what we do each day.Update: There’s no registration required for these events.
Monday: 3D Printer / OpenSCAD modeling class where we help people model ideas with OpenSCAD and Illustrator, and then allow them to print it on our 3D printer.
Tuesday: Combat Robotics Demo: Duke it out with miniature R/C machines in tabletop matches – it’s Robot Wars on a hand-held scale. Choose one from a field of 1-lb robots designed and built by Hive76 to drive and fight in a display of electro-mechanical fisticuffs. Learn the basics of building and strategy, and get a taste of upcoming combat robot classes offered at Hive76.
Wednesday: Open Hack Night, for anyone who wants to come and build, hack, or program. We’ll also have a Microcontoller session for individuals who want to become more familiar.
Thursday: Music Night: Come talk to our best music hackers and learn how to build effect pedals, make anything into a speaker and learn about amplifiers.
Saturday: Hive76 Ultimate Open House and Expo: Hive76 will have everything from the previous week available for display, and to play with.Also available will be Karaoke, Music, Movies, Food and Refreshments.
Lately, a few members have been discussing the use of 3D printed parts in use with metal casting techniques to create some stronger, lighter and more durable parts. As all good hackerspace conversations do, we immediately decided to go with the most painful and difficult solution: Metal Casting. Luckily for us the very next day, we got an e-mail that a local group, Philadelphia Sculpture Gym, that they intended on hosting an aluminium greensand casting class. A perfect opportunity to learn some metal casting techniques, even if not totally applicable to what we wanted to ultimately end up casting. Andrew S., and myself both signed up along with a few friends of Hive76.
About 30 minutes into making our own greensand molds, we realized that this was going to be a difficult process, and immediately destroyed several hours of work trying to get a good crisp mold for our first pour.
A simple gear was too difficult
Several hours into our class, we managed to finally get a good solid mold of a 3D printed TARDIS. We hopped in line and got a pretty good looking cast. Andrew also attempted the TARDIS with some success. He also managed to get some good casts of a wooden puzzle, including one that blew out. However, due to our earlier troubles, we decided to hedge our bets and get one more good pour out of the class before we would start wrapping up. While waiting to pour ours, I was being shown how to work the furnace by Gus, and ended up melting down plenty of scrap and helping others make their pours which was a lot of fun to be working with. The furnace was operating at about 1300 Celsius, and moving around molten metal at that temperature can be quite a thrill. We plan on working with Gus and Darla at Philadelphia Sculpture Gym on some other types of casting techniques, especially as they apply to our 3D printing. We look forward to working with them in the future, and hope you all consider taking their next Greensand class in January.
A simple gear was too difficult
Aluminum Cast TARDIS
A Greensand mold of 2 medallions
My new shirt while working the furnace – but really, a white shirt while casting Aluminum is a bad idea. Mine’s already spotted.
A poured mold, cooling
Removing the crucible from the Furnace
Example Cast to show how much better we need to become
Feeding the Crucible with Scrap Aluminum
Pouring an Ingot from leftover Aluminum
A bad pour – when your two halves don’t deal together
I gave a talk too where I delved deeper into the science behind our work with RepRap for research in Regenerative Medicine and I made the case that open source is a philosophy, not a checkbox. Try not to get caught up in semantics of open vs. not-open (e.g. one could try to label Arduino as not an “open” platform since it has proprietary Atmel chips on the board). Instead, try to think of open projects as those in which you see people as collaborators (“open”), not customers (“closed”). We all have many things we can learn from each other, and who doesn’t want more collaborators to learn science together? Some interesting Q&A at the end too.
We are cosponsoring Cory’s Pirate Cinema event at IndyHall tonight, but since there’s not much for Hive76 to do, we decided to make him a present. Here’s a video of production last night:
That’s a 3D printed sugar head! Cory’s excited to see it in person. You should be too! Come to IndyHall 22N 3rd at 7pm tonight. Here’s the Anyvite link to RSVP. We’ll be bringing a boomcase for the PA too.
The gritty details: That’s a Baricuda extruder using air pressure to extrude molten sugar. Now I need to figure out how he can get it home to the UK in one piece.
Hive76 sure made the rounds at this year’s Maker Faire. With 2 tables in the 3D Printing Village, we had a steady stream of visitors both
days, ranging from Chocolateers, Digital Artists, to young children asking about 3D printing toys and parts for their projects. Discussion started about 10 minutes after we left Maker Faire for what to do next year. Check out the album for some quick snapshots of this year’s events including Karaoke, Thumb Wrestling, and of course, the occasional interview.
We are a hackerspace in South Philadelphia, at 1901 S 9th St. We are a group of hackers, DIYers, and Makers that tear things apart and put them
together in new ways. Please join our announcement list, discussion
list, or RSS feed to keep up to date on our exciting projects and events, or just email us at Hive76@gmail.com. And be sure to stop by our open house every Wednesday night!
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